Valves and valve actuation – Tube compressors – Fluid pressure actuated
Patent
1978-03-31
1980-04-01
Schwadron, Martin P.
Valves and valve actuation
Tube compressors
Fluid pressure actuated
285321, F16K 707
Patent
active
041958101
ABSTRACT:
A pinch valve comprising a cylindrical housing having a sidewall and an opposed pair of end walls each having an opening. A resilient tubular sleeve having a central passageway is disposed within the housing with its ends frictionally fit within respective openings in the end walls and with its outside surface spaced from the inside surface of the housing's sidewall to form a control chamber. A control port extends through the sidewall of the housing into communication with the chamber. A pair of tubular nipples are frictionally fit within respective ends of the passageway. The thickness of the sleeve wall at portions contiguous with each nipples' inner end is at least equal to the radius of the passageway in that nipple. The nipples and the housing end wall openings each include peripheral grooves for receipt of contiguous portions of the sleeve therein to form fluid tight seals. Snap rings and cap plates are used to hold the housing, sleeve and nipples together.
REFERENCES:
patent: 2345693 (1944-04-01), Wilson et al.
patent: 3511240 (1970-05-01), Williams et al.
patent: 3885769 (1975-05-01), Morrison
Gerard Richard
Schwadron Martin P.
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